Display device

ABSTRACT

A display device comprises a plurality of pixels including a first pixel having a first color filter, a second pixel having a second color filter, and a third pixel having a third color filter, a plurality of first signal lines and a plurality of second signal lines, a first overlapping portion in which the first and the second color filters overlap each other in an adjacent portion of the first and the second pixels, a second overlapping portion in which the second and the third color filters overlap each other that overlap one of the second signal lines in an adjacent portion of the second and the third pixels, and a third overlapping portion in which the third and the first color filters overlap each other that overlap two of the second signal lines in an adjacent portion of the third and the first pixels.

CROSS-REFERENCE TO RELATED APPLICATION

This application claims priority to and the benefit of Korean PatentApplication No. 10-2019-0127891 filed in the Korean IntellectualProperty Office on Oct. 15, 2019, the entire contents of which areincorporated herein by reference.

BACKGROUND (a) Field

The present disclosure relates to a display device, and moreparticularly, to a display device that may have improved displayquality.

(b) Description of the Related Art

A liquid crystal display is one of flat panel displays which are mostwidely used, and includes two sheets of display panels in which fieldgenerating electrodes such as a pixel electrode and a common electrodeare formed, and a liquid crystal layer interposed between the pixelelectrode and the common electrode, and displays an image by applying avoltage to the field generating electrodes to generate an electric fieldin the liquid crystal layer, thereby determining an orientation ofliquid crystal molecules of the liquid crystal layer based on thegenerated electric field and controlling polarization of incident light.

As a resolution of the liquid crystal display increases and a demand forhigh display quality increases, there is need to develop a novel way toprevent a contrast ratio from being reduced by light reflected from asurface of a signal line without reducing an aperture ratio of theliquid crystal display.

The above information disclosed in this Background section is only forenhancement of understanding of the background of the currentdisclosure, and therefore it may contain information that does not formthe prior art that is already known in this country to a person ofordinary skill in the art.

SUMMARY

Embodiments have been made in an effort to provide a liquid crystaldisplay that may reduce influence of light reflected from a surface of asignal line without reducing an aperture ratio of the liquid crystaldisplay.

A display device according to an embodiment comprises: a plurality ofpixels disposed along a first direction and comprising a first pixelincluding a first color filter, a second pixel including a second colorfilter, and a third pixel including a third color filter; a plurality offirst signal lines and a plurality of second signal lines extending in asecond direction substantially perpendicular to the first direction andinsulated from each other; a first overlapping portion in which thefirst color filter and the second color filter overlap each other in anadjacent portion of the first pixel and the second pixel; a secondoverlapping portion in which the second color filter and the third colorfilter overlap each other that overlap one of the second signal lines inan adjacent portion of the second pixel and the third pixel; and a thirdoverlapping portion in which the third color filter and the first colorfilter overlap each other that overlap two of the second signal lines inan adjacent portion of the third pixel and the first pixel.

The first overlapping portion, the second overlapping portion, and thethird overlapping portion may extend in the second direction.

A width of the third overlapping portion may be wider a width that ofthe second overlapping portion, and the width of the second overlappingportion may be wider than a width of the first overlapping portion.

Light transmittance of the first overlapping portion may be greater thanlight transmittance of the second overlapping portion, and the lighttransmittance of the second overlapping portion may be greater thanlight transmittance of the third overlapping portion.

Light transmittance of the first color filter may be smaller than lighttransmittance of the second color filter, and light transmittance of thethird color filter may be smaller than light transmittance of the firstcolor filter.

One of the plurality of first signal lines may overlap the firstoverlapping portion, and the first overlapping portion may not overlapthe plurality of second signal lines.

Two of the plurality of first signal lines may be disposed at each sideof the one second signal line overlapping the second overlapping portionrespectively.

Two of the plurality of first signal lines may be disposed at each sideof two second signal lines overlapping the third overlapping portionrespectively.

A display device according to an another embodiment comprises: aplurality of pixels disposed along a first direction and including afirst pixel, a second pixel, and a third pixel; a first voltage line, asecond voltage line, a third voltage line, a fourth voltage line, and afifth voltage line disposed in order along the first direction andextending along a second direction substantially perpendicular to thefirst direction; and a first data line, a second data line, and a thirddata line insulated from the first voltage line, the second voltageline, the third voltage line, the fourth voltage line, and the fifthvoltage line, disposed in order along the first direction, and extendingalong the second direction. The first data line and the second data linemay be disposed between the first voltage line and the second voltageline adjacent to each other, and the third data line may be disposedbetween the fourth voltage line and the fifth voltage line adjacent toeach other.

A display device according to an another embodiment comprises: aplurality of pixels disposed along a first direction and including afirst pixel, a second pixel, and a third pixel; a first voltage line, asecond voltage line, a third voltage line, a fourth voltage line, and afifth voltage line disposed in order along the first direction andextending along a second direction substantially perpendicular to thefirst direction; a first data line, a second data line, and a third dataline insulated from the first voltage line, the second voltage line, thethird voltage line, the fourth voltage line, and the fifth voltage line,disposed in order along the first direction, and extending along thesecond direction. The first data line and the second data line may bedisposed between the first voltage line and the second voltage lineadjacent to each other, and the third data line may be disposed betweenthe second voltage line and the third voltage line adjacent to eachother.

The fourth voltage line and the fifth voltage line may be disposedbetween the second pixel and the third pixel, and no data line may bedisposed between the fourth voltage line and the fifth voltage line.

A display device according to an another embodiment comprises: aplurality of pixels disposed along a first direction and including afirst pixel, a second pixel, and a third pixel; a first voltage line, asecond voltage line, a third voltage line, a fourth voltage line, and afifth voltage line disposed in order along the first direction andextending along a second direction substantially perpendicular to thefirst direction; a first data line, a second data line, and a third dataline insulated from the first voltage line, the second voltage line, thethird voltage line, the fourth voltage line, and the fifth voltage line,disposed in order along the first direction, and extending along thesecond direction. The first data line and the second data line may bedisposed between the first voltage line and the second voltage line, anda portion of the third data line may be disposed between the secondvoltage line and the third voltage line, while another portion of thethird data line may be disposed between the fourth voltage line and thefifth voltage line.

The second voltage line, the third voltage line, and the second dataline may be connected to the first pixel; the third voltage line, thefourth voltage line, and the third data line may be connected to thesecond pixel; and the fifth voltage line, the first voltage line, andthe first data line may be connected to the third pixel.

The first pixel may include a first color filter, the second pixel mayinclude a second color filter, and the third pixel may include a thirdcolor filter; a first insulating film disposed between the first voltageline, the second voltage line, the third voltage line, the fourthvoltage line, the fifth voltage line, and the first data line, thesecond data line, and the third data line and a second insulating filmdisposed on the first data line, the second data line, and the thirddata line may be further included; and the first color filter, thesecond color filter, and the third color filter may be disposed on thesecond insulating film.

According to embodiments, it is possible to reduce influence of lightreflected from a surface of a signal line without reducing an apertureratio of a display device.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a layout view for conceptually illustrating an arrangement ofsignal lines of a display device according to an embodiment;

FIG. 2 is a cross-sectional view taken along line II-II of a portionbetween a first pixel and a second pixel of FIG. 1;

FIG. 3 is a cross-sectional view taken along line III-III of a portionbetween a second pixel and a third pixel of FIG. 1;

FIG. 4 is a cross-sectional view taken along line IV-IV of a portionbetween a third pixel and a first pixel of FIG. 1;

FIG. 5 is an equivalent circuit diagram of one pixel of a display deviceaccording to an embodiment;

FIG. 6 is a layout diagram of one pixel of a display device according toan embodiment;

FIG. 7 is a cross-sectional view taken along line VII-VII of FIG. 6;

FIG. 8 is a top plan view illustrating a basic region of a pixelelectrode of a display device according to an embodiment;

FIG. 9, FIG. 10, and FIG. 11 are diagrams for explaining a path of lightincident and reflected on a signal line of a display device according toan embodiment;

FIG. 12 is a diagram illustrating transmittance of a color filter;

FIG. 13 is a diagram illustrating transmittance of an overlappingportion of a color filter;

FIG. 14 is a layout view for illustrating an arrangement of signal linesof a display device according to another embodiment; and

FIG. 15 is a layout view for illustrating an arrangement of signal linesof a display device according to another embodiment.

DETAILED DESCRIPTION OF THE EMBODIMENTS

The present disclosure will be described more fully hereinafter withreference to the accompanying drawings, in which embodiments of thedisclosure are shown. As those skilled in the art would realize, thedescribed embodiments may be modified in various different ways, allwithout departing from the spirit or scope of the present disclosure.

Parts that are irrelevant to the description will be omitted to clearlydescribe the present disclosure, and like reference numerals designatelike elements throughout the specification.

Further, in the drawings, the size and thickness of each element arearbitrarily illustrated for ease of description, and the presentdisclosure is not necessarily limited to those illustrated in thedrawings. In the drawings, the thicknesses of layers, films, panels,regions, etc., are exaggerated for clarity. In the drawings, for ease ofdescription, the thicknesses of some layers and areas are exaggerated.

It will be understood that when an element such as a layer, film,region, or substrate is referred to as being “on” another element, itcan be directly on the other element or intervening elements may also bepresent. In contrast, when an element is referred to as being “directlyon” another element, there are no intervening elements present. Further,in the specification, the word “on” or “above” means disposed on orbelow the object portion, and does not necessarily mean disposed on theupper side of the object portion based on a gravitational direction.

In addition, unless explicitly described to the contrary, the word“comprise” and variations such as “comprises” or “comprising” will beunderstood to imply the inclusion of stated elements but not theexclusion of any other elements.

Further, throughout the specification, the phrase “in a plan view” meansviewing a target portion from the top, and the phrase “in across-sectional view” means viewing a cross-section formed by verticallycutting a target portion from the side.

Referring to FIG. 1, arrangement of signal lines of a display deviceaccording to an embodiment will be described. FIG. 1 is a layout viewfor conceptually illustrating an arrangement of signal lines of adisplay device.

Referring to FIG. 1, the display device includes a first pixel PXA, asecond pixel PXB, and a third pixel PXC that are disposed along a firstdirection D1 and display different colors, and a plurality of signallines 131 a, 131 b, 131 c, 131 d, 131 e, 171 a, 171 b, and 171 cextending along a second direction D2 substantially perpendicular to thefirst direction D1.

The first pixel PXA may display a first color R, the second pixel PXBmay display a second color G, and the third pixel PXC may display athird color B. For example, the first color R may be red, the secondcolor G may be green, and the third color B may be blue. However, thefirst color R, the second color G, and the third color B are notlimited, and they may respectively display any one of other primarycolors. In FIG. 1, the first pixel PXA, the second pixel PXB, and thethird pixel PXC are repeatedly arranged along the first direction D1,but, alternatively, the display device may further include an additionalpixel displaying a color different from the first color R, the secondcolor G, and the third color B. In addition, the first pixel PXA, thesecond pixel PXB, the third pixel PX3, and the additional pixel may havea striped arrangement structure, a mosaic arrangement structure, atriangular arrangement structure, and the like. In the case of thestriped arrangement, only pixels displaying the same color are arrangedin one column, and pixels displaying different colors are alternatelyarranged in one row. In the case of the mosaic arrangement, pixels thatdisplay red and different colors are alternately arranged in column androw directions. In the case of the triangular arrangement, pixelsdisplaying different colors are alternately arranged in a row direction,but are diagonally arranged in a zigzag form in a column direction.

As depicted in FIG. 1, the third pixel PXC is located to a first side ofthe first pixel PXA along the first direction D1, and the second pixelPXB is located to a second side of the first pixel PXA along the firstdirection D1. For example, the first side may be a left side and thesecond side may be a right side.

A first voltage line 131 a and a second voltage line 131 b are disposedbetween the first pixel PXA and the third pixel PXC that are adjacent toeach other, and a first data line 171 a and a second data line 171 b aredisposed between the first voltage line 131 a and the second voltageline 131 b that are adjacent to each other.

A third voltage line 131 c is disposed between the first pixel PXA andthe second pixel PXB that are adjacent to each other.

A fourth voltage line 131 d and a fifth voltage line 131 e are disposedbetween the second pixel PXB and the third pixel PXC that are adjacentto each other, and a third data line 171 c is disposed between thefourth voltage line 131 d and the fifth voltage line 131 e that areadjacent to each other.

Although not shown, the second voltage line 131 b and the third voltageline 131 c disposed at both sides of the first pixel PXA, and the seconddata line 171 b disposed adjacent to the first pixel PXA may beconnected to an element such as a transistor and a capacitor included inthe first pixel PXA to apply a predetermined voltage and a data voltageto the first pixel PXA.

Similarly, the third voltage line 131 c and the fourth voltage line 131d disposed at both sides of the second pixel PXB, and the third dataline 171 c disposed adjacent to the second pixel PXB, may be connectedto an element such as a transistor and a capacitor included in thesecond pixel PXB to apply a predetermined voltage and a data voltage tothe second pixel PXB.

In addition, the fifth voltage line 131 e and the first voltage line 131a disposed at both sides of the third pixel PXC, and the first data line171 a disposed adjacent to the third pixel PXC, may be connected to anelement such as a transistor and a capacitor included in the third pixelPXC to apply a predetermined voltage and a data voltage to the thirdpixel PXC.

Although not shown, the first voltage line 131 a, the second voltageline 131 b, the third voltage line 131 c, the fourth voltage line 131 d,and the fifth voltage line 131 e may further include a horizontalportion extending in the first direction D1, and they may be connectedto each other by the horizontal portion to receive the same voltage.Although not shown, a gate line extending along the first direction D1may be further included, and the horizontal portion of the first voltageline 131 a, the second voltage line 131 b, the third voltage line 131 c,the fourth voltage line 131 d, and the fifth voltage line 131 e, and thegate line, may be disposed adjacent to an element such as transistorsand a capacitor included in each of the pixels PXA, PXB, and PXC to becovered by a light blocking member.

An interlayer structure such as a signal line and an insulating filmbetween two adjacent pixels will be described with reference to FIG. 2to FIG. 4 along with FIG. 1. FIG. 2 is a cross-sectional view takenalong line II-II of FIG. 1, FIG. 3 is a cross-sectional view taken alongline III-III of FIG. 1, and FIG. 4 is a cross-sectional view taken alongline IV-IV of FIG. 1.

Referring to FIG. 2 with FIG. 1, the third voltage line 131 c isdisposed on a first substrate 110, and a gate insulating film 140 isdisposed on the third voltage line 131 c. A first passivation film 180 pis disposed on the gate insulating film 140, and a first color filter230A and a second color filter 230B are disposed on the firstpassivation film 180 p. The first color filter 230A is disposed in thefirst pixel PXA, the second color filter 230B is disposed in the secondpixel PXB, and a first overlapping portion O1 in which the first colorfilter 230A and the second color filter 230B partially overlap isdisposed in an adjacent portion of the first pixel PXA and the secondpixel PXB. The first overlapping portion O1 may be disposed along thesecond direction D2. The third voltage line 131 c disposed between thefirst pixel PXA and the second pixel PXB overlaps the first overlappingportion O1 of the first color filter 230A and the second color filter230B. The first overlapping portion O1 may only overlap the thirdvoltage line 131 c and may not overlap the data line. A secondpassivation film 180 q is disposed on the first color filter 230A andthe second color filter 230B, and a pixel electrode 191 is disposed onthe second passivation film 180 q. Although not shown, the displaydevice may further include a second substrate facing the first substrate110, a common electrode disposed on the second substrate, and a liquidcrystal layer disposed between the first substrate and the secondsubstrate.

Referring to FIG. 3, the fourth voltage line 131 d and the fifth voltageline 131 e are disposed on the first substrate 110, the gate insulatingfilm 140 is disposed on the fourth voltage line 131 d and the fifthvoltage line 131 e, the third data line 171 c is disposed on the gateinsulating film 140, the first passivation film 180 p is disposed on thethird data line 171 c, and the second color filter 230B and the thirdcolor filter 230C are disposed on the first passivation film 180 p. Thesecond color filter 230B is disposed in the second pixel PXB, the thirdcolor filter 230C is disposed in the third pixel PXC, and a secondoverlapping portion O2 in which the second color filter 230B and thethird color filter 230C partially overlap is disposed in an adjacentportion of the second pixel PXB and the third pixel PXC. The secondoverlapping portion O2 may be disposed along the second direction D2.The second overlapping portion O2 overlaps the third data line 171 c,the fourth voltage line 131 d overlaps the second color filter 230B, andthe fifth voltage line 131 e overlaps the third color filter 230C. Thesecond passivation film 180 q is disposed on the second color filter230B and the third color filter 230C, and the pixel electrode 191 isdisposed on the second passivation film 180 q. Although not shown, thedisplay device may further include a second substrate facing the firstsubstrate 110, a common electrode disposed on the second substrate, anda liquid crystal layer disposed between the first substrate and thesecond substrate.

Referring to FIG. 4, the first voltage line 131 a and the second voltageline 131 b are disposed on the first substrate 110, the gate insulatingfilm 140 is disposed on the first voltage line 131 a and the secondvoltage line 131 b, the first data line 171 a and the second data line171 b are disposed on the gate insulating film 140, the firstpassivation film 180 p is disposed on the first data line 171 a and thesecond data line 171 b, and the third color filter 230C and the firstcolor filter 230A are disposed on the first passivation film 180 p. Thethird color filter 230C is disposed in the third pixel PXC, the firstcolor filter 230A is disposed in the first pixel PXA, and a thirdoverlapping portion O3 in which the third color filter 230C and thefirst color filter 230A partially overlap is disposed in an adjacentportion of the third pixel PXC and the first pixel PXA. The thirdoverlapping portion O3 may be disposed along the second direction D2.The third overlapping portion O3 overlaps the first data line 171 a andthe second data line 171 b, the first voltage line 131 a overlaps thethird color filter 230C, and the second voltage line 131 b overlaps thefirst color filter 230A. The second passivation film 180 q is disposedon the third color filter 230C and the first color filter 230A, and thepixel electrode 191 is disposed on the second passivation film 180 q.Although not shown, the display device may further include a secondsubstrate facing the first substrate 110, a common electrode disposed onthe second substrate, and a liquid crystal layer disposed between thefirst substrate and the second substrate.

Referring to FIG. 2 to FIG. 4, a width of the second overlapping portionO2 of the second color filter 230B and the third color filter 230C maybe wider than that of the first overlapping portion O1 of the firstcolor filter 230A and the second color filter 230B, and a width of thethird overlapping portion O3 of the third color filter 230C and thefirst color filter 230A may be wider than that of the second overlappingportion O2 of the second color filter 230B and the third color filter230C. Accordingly, the third overlapping portion O3 is wider than thefirst overlapping portion O1.

Hereinafter, one pixel of the display device according to the embodimentwill be described with references to FIG. 5, FIG. 6, FIG. 7, and FIG. 8.FIG. 5 is an equivalent circuit diagram of one pixel of a display deviceaccording to an embodiment, FIG. 6 is a layout diagram of one pixel of adisplay device according to an embodiment, FIG. 7 is a cross-sectionalview taken along line VII-VII of FIG. 6, and FIG. 8 is a top plan viewillustrating a basic region of a pixel electrode of a display deviceaccording to an embodiment.

First, referring to FIG. 5, one pixel PX of the liquid crystal displaymay include a plurality of signal lines including a gate line GL fortransmitting a gate signal, a data line DL for transmitting a datasignal, a divided reference voltage line RL for transmitting a dividedreference voltage, first, second, and third switching elements Qa, Qb,and Qc connected to the plurality of signal lines, and first and secondliquid crystal capacitors Clca and Clcb.

The first and second switching elements Qa and Qb are respectivelyconnected to the gate line GL and the data line DL, and the thirdswitching element Qc is connected to an output terminal of the secondswitching element Qb and the divided reference voltage line RL.

The first switching element Qa and the second switching element Qb arethree-terminal elements such as a thin film transistors so that controlterminals are connected to the gate line GL, input terminals areconnected to the data line DL, an output terminal of the first switchingelement Qa is connected to the first liquid crystal capacitor Clca, andan output terminal of the second switching element Qb is connected tothe second liquid crystal capacitor Clcb and an input terminal of thethird switching element Qc simultaneously.

The third switching element Qc is also a three-terminal element such asa thin film transistor so that a control terminal is connected to thegate line GL, an input terminal is connected to the second liquidcrystal capacitor Clcb, and an output terminal is connected to thedivided reference voltage line RL.

When a gate-on signal is applied to the gate line GL, the firstswitching element Qa, the second switching element Qb, and the thirdswitching element Qc connected to the gate line GL are turned on. Thus,a data voltage applied to the data line DL is applied to a firstsubpixel electrode PEa and a second subpixel electrode PEb through theturned-on first switching element Qa and the turned-on second switchingelement Qb. In this case, the data voltages applied to the firstsubpixel electrode PEa and the second subpixel electrode PEb are equal,and the first and second liquid crystal capacitors Clca and Clcb arecharged with the same value as a difference between the common voltageand the data voltage. Simultaneously, a voltage charged to the secondliquid crystal capacitor Clcb is divided through the turned-on thirdswitching element Qc. Thus, the voltage charged to the second liquidcrystal capacitor Clcb decreases by a difference between the commonvoltage and the divided reference voltage. That is, a voltage charged tothe first liquid crystal capacitor Clca is higher than that charged tothe second liquid crystal capacitor Clcb.

As such, the voltages charged to the first and second liquid crystalcapacitors Clca and Clcb are different from each other. Since thevoltage of the first and second liquid crystal capacitors Clca and Clcbare different from each other, angles at which liquid crystal moleculesare inclined in the first subpixel and the second subpixel aredifferent, and thus luminance of the two subpixels are different.Accordingly when the voltages of the first and second liquid crystalcapacitors Clca and Clcb are appropriately adjusted, an image viewedfrom a lateral side is as close as possible to an image viewed from afront side, thereby improving side visibility.

In the shown embodiment, the third switching element Qc connected to thesecond liquid crystal capacitor Clcb and the divided reference voltageline RL is included to make the voltages charged to the first and secondliquid crystal capacitors Clca and Clcb different, but the second liquidcrystal capacitor Clcb may be connected to a step-down capacitor (notshown) in another embodiment of the present disclosure. Specifically,the third switching element including a first terminal connected to astep-down gate line, a second terminal connected to the second liquidcrystal capacitor Clcb, and a third terminal connected to the step-downcapacitor may be included such that an amount of charges charged in thesecond liquid crystal capacitor Clcb may be partially charged in thestep-down capacitor, thereby differently setting the charged voltagesbetween the first and second liquid crystal capacitors Clca and Clcb. Inaddition, in a liquid crystal display according to another embodiment,the first liquid crystal capacitor Clca and the second liquid crystalcapacitor Clcb are connected to different data lines to receivedifferent data voltages, and thus it is possible to differently set thecharged voltage between the first liquid crystal capacitor Clca and thesecond liquid crystal capacitor Clcb. Alternatively, by variousdifferent methods, the charged voltages between the first and secondliquid crystal capacitors Clca and Clcb may be differently set.

A structure of the liquid crystal display according to the embodimentwill be briefly described with reference to FIG. 6, FIG. 7, and FIG. 8.

Referring to FIG. 6 and FIG. 7, the liquid crystal display according tothe embodiment includes a lower display panel 100 and an upper displaypanel 200 facing the lower display panel 100, a liquid crystal layer 3interposed between the two display panels 100 and 200, and a pair ofpolarizers (not shown) attached to outer surfaces of the display panels100 and 200.

First, the lower display panel 100 will be described.

A gate conductor (not shown) including a gate line 121 and a voltageline 131 are disposed on the first substrate 110 which is made oftransparent glass or plastic.

The gate line 121 includes a first gate electrode 124 a, a second gateelectrode 124 b, a third gate electrode 124 c, and a wide end portion(not shown) for connection with another layer or an external drivingcircuit.

A voltage line 131 includes a first storage electrode 135, a secondstorage electrode 136, and a reference electrode 137. The second storageelectrode 136 may be connected to an additional voltage line (not shown)disposed below the second storage electrode 136.

The gate insulating film 140 is disposed on the gate line 121 and thevoltage line 131.

A first semiconductor 154 a, a second semiconductor 154 b, and a thirdsemiconductor 154 c are disposed on the gate insulating film 140.

A data conductor including plurality of data lines 171 including a firstsource electrode 173 a and a second source electrode 173 b, a firstdrain electrode 175 a, a second drain electrode 175 b, a third sourceelectrode 173 c, and a third drain electrode 175 c is disposed on ohmiccontact members 163 a, 165 a, 163 b, 165 b, 163 c, and 165 c and a gateinsulating film 140.

The data conductor and the semiconductor and the ohmic contact memberwhich are disposed the data conductor may be formed simultaneously usingone mask.

Each of the data lines 171 includes a wide end portion (not shown) forconnection with another layer or an external driving circuit.

The first gate electrode 124 a, the first source electrode 173 a, andthe first drain electrode 175 a together with the first semiconductor154 a form one first thin film transistor (TFT), and a channel of thefirst thin film transistor is formed in the semiconductor 154 a which isdisposed between the first source electrode 173 a and the first drainelectrode 175 a. Similarly, the second gate electrode 124 b, the secondsource electrode 173 b, and the second drain electrode 175 b togetherwith the second semiconductor 154 b form one second thin filmtransistor, and a channel of the second thin film transistor is formedin the semiconductor 154 b which is disposed between the second sourceelectrode 173 b and the second drain 175 b. The third gate electrode 124c, the third source electrode 173 c, and the third drain electrode 175 ctogether with the third semiconductor 154 c form one third thin filmtransistor, and a channel of the third thin film transistor is formed inthe semiconductor 154 c which is disposed between the third sourceelectrode 173 c and the third drain electrode 175 c.

The second drain electrode 175 b is connected to the third sourceelectrode 173 c, and includes a widened extension 177.

The first passivation film 180 p is disposed on the data conductors 171,173 c, 175 a, 175 b, and 175 c and the exposed semiconductors 154 a, 154b, and 154 c. The first passivation film 180 p may include an inorganicinsulating film such as a silicon nitride or silicon oxide. The firstpassivation film 180 p may prevent a pigment of the color filter 230from flowing into exposed portions of the semiconductors 154 a, 154 b,and 154 c.

The color filter 230 is disposed on the first passivation film 180 p.The color filter 230 extends in a second direction to be parallel to thedata line 171. Although not shown, two adjacent color filters 230overlap each other to form an overlapping portion.

A second passivation film 180 q is disposed on the color filter 230.

The second passivation film 180 q may include an inorganic insulatingfilm such as a silicon nitride or silicon oxide. The second passivationfilm 180 q prevents the color filter 230 from being lifted andsuppresses the liquid crystal layer 3 from being polluted due to anorganic material such as a solvent inflowing from the color filter 230,thereby preventing defects, such as an afterimage which may occur at thetime of driving a screen, from occurring.

A first contact hole 185 a and a second contact hole 185 q overlappingthe first drain electrode 175 a and the second drain electrode 175 b areformed in the first passivation film 180 p and the second passivationfilm 180 q.

A third contact hole 185 c overlapping a portion of the referenceelectrode 137 and a portion of the third drain electrode 175 c is formedin the first passivation film 180 p, the second passivation film 180 q,and the gate insulating film 140, and a connecting member 195 covers thethird contact hole 185 c. The connecting member 195 electricallyconnects the reference electrode 137 and the third drain electrode 175 cexposed through the third contact hole 185 c.

A plurality of pixel electrodes 191 are disposed on the secondpassivation film 180 q. Each of the pixel electrodes 191 includes afirst subpixel electrode 191 a and a second subpixel electrode 191 bthat are separated from each other with the gate line 121 disposedbetween the first subpixel electrode 191 a and the second subpixelelectrode 191 b, and that are adjacent to each other in a seconddirection based on the gate line 121. The pixel electrode 191 may bemade of a transparent material such as an ITO and an IZO. The pixelelectrode 191 may be made of a transparent conductive material such asan ITO or IZO or of a reflective metal such as aluminum, silver,chromium, or an alloy of aluminum, silver, and chromium.

Each of the first subpixel electrode 191 a and the second subpixelelectrode 191 b includes one or more of a basic electrode 199, and avariation shown in FIG. 8.

The first subpixel electrode 191 a and the second subpixel electrode 191b are physically and electrically connected to the first drain electrode175 a and the second drain electrode 175 b through the first contacthole 185 a and the second contact hole 185 b, respectively, and theyseparately receive a data voltage from the first drain electrode 175 aand the second drain electrode 175 b. In this case, a portion of thedata voltage applied to the second drain electrode 175 b is dividedthrough the third source electrode 173 c such that a voltage applied tothe first subpixel electrode 191 a is larger than a voltage applied tothe second subpixel electrode 191 b.

The first and second subpixel electrodes 191 a and 191 b to which thedata voltage is applied determine a direction of liquid crystalmolecules of the liquid crystal layer 3 between the two electrodes 191and 270 by generating an electric field together with a common electrode270 of the upper display panel 200. Luminance of light passing throughthe liquid crystal layer 3 varies according to the direction of theliquid crystal molecules determined as described above.

A light blocking member 220 is disposed on the pixel electrode 191. Thelight blocking member 220 covers all of regions in which the firsttransistor, the second transistor, the third transistor, and the first,second, and third contact holes 185 a, 185 b, and 185 c are disposed,and they extend in the same direction as the gate line 121 and thevoltage line 131 so as to overlap a portion of the data line 171. Thelight blocking member 220 may prevent light leakage that may occur nearthe data line 171 and the gate line 121, and prevent light leakage in aregion in which the first transistor, the second transistor, and thethird transistor are disposed.

Before the light blocking member 220 is formed, the first passivationfilm 180 p, the color filter 230, and the second passivation film 180 qare disposed in the region in which the first transistor, the secondtransistor Qb, the third transistor, and the first to third contactholes 185 a, 185 b, and 185 c are disposed, so that positions of thefirst transistor, the second transistor Qb, the third transistor, andthe first, second, and third contact holes 185 a, 185 b, and 185 c maybe easily distinguished. Therefore, if a defect occurs in the firsttransistor, the second transistor, and/or the third transistor during amanufacturing process, the defect of the first transistor, the secondtransistor, and the third transistor may be repaired before the lightblocking member 220 is formed. As such, the color filter 230 is formedin the region in which the first transistor, the second transistor Qb,and the third transistor are disposed, and after the defect is repaired,they are covered with the light blocking member 220 to prevent lightleakage, whereby the light leakage is prevented in a region adjacent tothe data line and the gate line, and degradation of performancecharacteristics of the thin film transistor due to unnecessary thin filmformation due to a step of the light blocking member that may occur whenthe light blocking member is formed around and on the thin filmtransistor is prevented, and the thin film transistor may be easilyrepaired by disposing the color filter on the thin film transistor. Inaddition, the color filter and the light blocking member may be formedon the thin film transistor display panel to prevent light leakage dueto an alignment error.

Hereinafter, the upper display panel 200 will be described.

A common electrode 270 is disposed on the second substrate 210. An upperalignment film (not shown) is disposed on the common electrode 270. Theupper alignment film may be a vertical alignment film.

The liquid crystal layer 3 has negative dielectric anisotropy, and theliquid crystal molecules of the liquid crystal layer 3 are aligned suchthat their long axes are substantially perpendicular to the surfaces ofthe two display panels 100 and 200 in the absence of an electric field.More specifically, the long axis of the liquid crystal molecule isarranged to be inclined by a pretilt angle with respect to the surfacesof the two display panels 100 and 200, and when the electric field isapplied by the pretilt direction, a direction in which the liquidcrystal molecule of the liquid crystal layer is inclined is determined.However, since the pretilt angle is not relatively large, the liquidcrystal molecules of the liquid crystal layer are arranged to besubstantially perpendicular to the surfaces of the display panels 100and 200.

Hereinafter, a basic electrode 199 will be described with reference toFIG. 8.

As shown in FIG. 8, an overall shape of the basic electrode 199 isquadrangular, and includes a cross stem portion including a horizontalstem portion 193 and a vertical stem portion 192 which is perpendicularto the stem portion 193. In addition, the basic electrode 199 is dividedinto a first subregion Da, a second subregion Db, a third subregion Dc,and a fourth subregion Dd by the horizontal stem portion 193 and thevertical stem portion 192. The subregions Da, Db, Dc, and Dd include aplurality of first minute branch portions 194 a, a plurality of secondminute branch portions 194 b, a plurality of third minute branchportions 194 c, and a plurality of fourth minute branch portions 194 d,respectively.

The first minute branch portions 194 a obliquely extend in an upper leftdirection from the horizontal stem portion 193 or the vertical stemportion 192, and the second minute branch portions 194 b obliquelyextend in an upper right direction from the horizontal stem portion 193or the vertical stem portion 192. In addition, the third minute branchportions 194 c obliquely extend in a lower left direction from thehorizontal stem portion 193 or the vertical stem portion 192, and thefourth minute branch portions 194 d obliquely extend obliquely in alower right direction from the horizontal stem portion 193 or thevertical stem portion 192.

The first minute branch portions 194 a, the second minute branchportions 194 b, the third minute branch portions 194 c, and the fourthminute branch portions 194 d form angles of about 45 degrees or 135degrees with the gate line 121 or the horizontal stem portion 193. Inaddition, the minute branch portions 194 a, 194 b, 194 c, and 194 d oftwo adjacent subregions Da, Db, Dc, and Dd may be perpendicular to eachother.

The minute branch portions 194 a, 194 b, 194 c, and 194 d may have awidth of about 2.5 μm to about 5.0 μm, and an interval between adjacentminute branch portions 194 a, 194 b, 194 c, and 194 d in one subregionDa, Db, Dc, or Dd may be about 2.5 μm to about 5.0 μm.

According to another embodiment of the present disclosure, the width ofthe minute branch portion 194 a, 194 b, 194 c, and 194 d may be wider asthey get closer to the horizontal stem portion 193 or the vertical stemportion 192, and a difference between a widest portion and a narrowestportion in one minute branch portion 194 a, 194 b, 194 c, and 194 d maybe about 0.2 μm to about 1.5 μm.

The first subpixel electrode 191 a and the second subpixel electrode 191b are connected to the first drain electrode 175 a or the second drainelectrode 175 b through the first contact hole 185 a and the secondcontact hole 185 b respectively, and they respectively receive a datavoltage from the first drain electrode 175 a and the second drainelectrode 175 b. In this case, sides of the first, second, third, andfourth minute branch portions 194 a, 194 b, 194 c, and 194 d distort anelectric field to generate horizontal components that determine theinclination direction of the liquid crystal molecules 31. A horizontalcomponent of the electric field is substantially horizontal to the sidesof the first, second, third, and fourth minute branch portions 194 a,194 b, 194 c, and 194 d. Therefore, as shown in FIG. 8, the liquidcrystal molecules 31 are inclined in a direction parallel to a lengthdirection of the minute branch portions 194 a, 194 b, 194 c, and 194 d.Since one pixel electrode 191 includes four subregions Da to Dd havingdifferent length directions of the minute branch portions 194 a, 194 b,194 c, and 194 d, the direction in which the liquid crystal molecules 31are inclined is substantially four directions, and thus four domainswith different alignment directions of the liquid crystal molecules 31are formed in the liquid crystal layer 3. As described above, when theliquid crystal molecules are inclined in various directions, a referenceviewing angle of the liquid crystal display increases.

The first, second, third, fourth, and fifth voltage lines 131 a, 131 b,131 c, 131 d, and 131 e described above with reference to FIG. 1, FIG.2, FIG. 3 and FIG. 4 may correspond to the voltage line 131 describedwith reference to FIG. 5, FIG. 6, FIG. 7, and FIG. 8, the first, second,and third data lines 171 a, 171 b, and 171 c described with reference toFIG. 1, FIG. 2, FIG. 3, and FIG. 4 may correspond to the data line 171described with reference to FIG. 5, FIG. 6, FIG. 7, and FIG. 8, and thefirst, second, and third color filters 230A, 230B, and 230C describedwith reference to FIG. 1, FIG. 2, FIG. 3, and FIG. 4 may correspond tothe color filter 230 described with reference to FIG. 5, FIG. 6, FIG. 7,and FIG. 8.

Hereinafter, reflection of light incident on the display device will bedescribed with reference to FIG. 12 and FIG. 13 along with FIG. 9, FIG.10, and FIG. 11. FIG. 9, FIG. 10, and FIG. 11 are diagrams forexplaining a path of light incident and reflected on a signal line of adisplay device according to an embodiment, FIG. 12 is a diagramillustrating transmittance of a color filter, and FIG. 13 is a diagramillustrating transmittance of an overlapping portion of a color filter.

Referring to FIG. 9, FIG. 10, and FIG. 11 together with FIG. 1, thethird voltage line 131 c is disposed between the first pixel PXA and thesecond pixel PXB that are adjacent to each other, the fourth voltageline 131 d and the fifth voltage line 131 e are disposed on the secondpixel PXB and the third pixel PXC that are adjacent to each other,respectively, the third data line 171 c is disposed between the fourthvoltage line 131 d and the fifth voltage line 131 e, the first voltageline 131 a and the second voltage line 131 b are disposed on the firstpixel PXA and the third pixel PXC that are adjacent to each other,respectively, and the first data line 171 a and the second data line 171b are disposed between the first voltage lines 131 a and the secondvoltage line 131 b that are adjacent to each other.

Referring to FIG. 9 together with FIG. 1, first incident light IL1incident from the outside is reflected on a surface of the third voltageline 131 c disposed between the first pixel PXA and the second pixel PXBthat are adjacent to each other to pass through the first color filter230A and the second color filter 230B of the first overlapping portionO1, and then it is outputted as first output light OL1.

Referring to FIG. 10 together with FIG. 1, second incident light IL2incident from the outside is reflected on the surface of the third dataline 171 c disposed between the second pixel PXB and the third pixel PXCthat are adjacent to each other and then passes through the second colorfilter 230B and the third color filter 230C in the second overlappingportion O2 to be outputted as second output light OL2; third incidentlight IL3 incident from the outside is reflected on the surface of thefourth voltage line 131 d and then passes through the second colorfilter 230B to be output as third output light OL3; and fourth incidentlight IL4 incident from the outside is reflected on the surface of thefifth voltage line 131 e and then passes through the third color filter230C to be output as fourth output light OL4.

Referring to FIG. 11 along with FIG. 1, fifth incident light IL5incident from the outside is reflected on the surface of the first dataline 171 a disposed between the third pixel PXC and the first pixel PXAthat are adjacent to each other and then passes through the third colorfilter 230C and the first color filter 230A in the third overlappingportion O3 to be outputted as fifth output light OL5; sixth incidentlight IL6 is reflected on the surface of the second data line 171 bdisposed between the third pixel PXC and the first pixel PXA that areadjacent to each other and then passes through the third color filter230C and the first color filter 230A in the third overlapping portion O3to be output as sixth output light OL6; seventh incident light IL7incident from the outside is reflected on the surface of the firstvoltage line 131 a and then passes through the third color filter 230Cto be output as seventh output light OL7; and eighth incident light IL8incident from the outside is reflected on the surface of the secondvoltage line 131 b and then passes through the first color filter 230Ato be outputted as eighth output light OL8.

FIG. 12 illustrates transmittances a, b, and c according to wavelengthsof the first color filter 230A, the second color filter 230B, and thethird color filter 230C. Referring to FIG. 12, the transmittance b ofthe second color filter 230B disposed in the second pixel PXB isrelatively largest, and the transmittance c of the third color filter230C disposed in the third pixel PXC is relatively smallest. Thetransmittance a of the first color filter 230A disposed in the firstpixel PXA is smaller than the transmittance b of the second color filter230B and larger than the transmittance c of the third color filter 230C.

FIG. 13 illustrates transmittances x, y, and z according to overlap oftwo color filters among the first color filter 230A, the second colorfilter 230B, and the third color filter 230C. Referring to FIG. 13, thelight transmittance x according to the overlap of the first color filter230A and the second color filter 230B is relatively largest; the lighttransmittance z according to overlap of the third color filter 230C andthe first color filter 230A is relatively smallest; and the lighttransmittance y according to overlap of the second color filter 230B andthe third color filter 230C is smaller than the light transmittance xaccording to the overlap of the first color filter 230A and the secondcolor filter 230B and greater than the light transmittance z accordingto the overlap of the third color filter 230C and the first color filter230A.

Referring to FIG. 12 and FIG. 13 together with FIG. 11, the thirdoverlapping portion O3 of the third color filter 230C and the firstcolor filter 230A having the relatively smallest light transmittancewhen the color filters overlap each other overlaps two data lines, thatis, the first data line 171 a and the second data line 171 b. Therefore,the fifth output light OL5 and the sixth output light OL6 that areincident from the outside and reflected on the surfaces of the firstdata line 171 a and the second data line 171 b and then pass through thethird overlapping portion O3 of the third color filter 230C and thefirst color filter 230A, have relatively low transmittance. In addition,the transmittances of the seventh output light OL7 and the eighth outputlight OL8 that are reflected on the surfaces of the first voltage line131 a and the second voltage line 131 b and then pass through the thirdcolor filter 230C and the first color filter 230A are lower than that ofoutput light that passes through the second color filter 230B to beoutputted. Since the gate insulating film 140 is disposed between thefirst voltage line 131 a to the fifth voltage line 131 e and the firstdata line 171 a to the third data line 171 c, among the light incidentfrom the outside, a path of the light reflected from the surfaces of thefirst, second, third, fourth, and fifth voltage lines 131 a, 131 b, 131c, 131 d, and 131 e is longer than a path of the light reflected fromthe surfaces of the first, second, and third data lines 171 a, 171 b,and 171 c, and transmittance of output light with a relatively longerlight path is lower than that of output light with a relatively shorterlight path. Therefore, the third overlapping portion O3 of the thirdcolor filter 230C and the first color filter 230A overlaps the firstdata line 171 a and the second data line 171 b, thus the light reflectedon the first data line 171 a and the second data line 171 b having arelatively short light path overlaps the third overlapping portion O3 ofthe third color filter 230C and the first color filter 230A, so thattotal transmittance of the light reflected on the surfaces of the signallines 131 a, 131 b, 131 c, 131 d, 131 e, 171 a, 171 b, and 171 c may bereduced.

Referring to FIG. 12 and FIG. 13 along with FIG. 9, when the colorfilters are overlapped, since the first overlapping portion O1 of thefirst color filter 230A and the second color filter 230B having therelatively largest light transmittance overlaps the voltage line 131 cdisposed between the first pixel PXA and the second pixel PXB, only thefirst output light OL1 reflected and outputted from the surface of thethird voltage line 131 c among the reflected light passes through thefirst overlapping portion O1 of the first color filter 230A and thesecond color filter 230B. In addition, when the color filters areoverlapped, since the first overlapping portion O1 of the first colorfilter 230A and the second color filter 230B having the relativelylargest light transmittance overlaps the third voltage line 131 c anddoes not overlap the first, second, and third data lines 171 a, 171 b,and 171 c, the reflected light having a relatively long light path isoutputted. In addition, when the color filters are overlapped, since thefirst overlapping portion O1 of the first color filter 230A and thesecond color filter 230B having the relatively largest lighttransmittance overlaps the third voltage line 131 c which is one signalline, the reflected light passing through the first overlapping portionO1 is only the first output light OL1, and thus the total transmittanceof the light reflected from the surface of the signal lines 131 a, 131b, 131 c, 131 d, 131 e, 171 a, 171 b, and 171 c may be reduced.

Referring to FIG. 12 and FIG. 13 together with FIG. 10, when the colorfilters are overlapped, the second overlapping portion O2 of the secondcolor filter 230B and the third color filter 230C having the lighttransmittance between the first overlapping portion O1 and the thirdoverlapping portion O3 overlaps the third data line 171 c disposedbetween the second pixel PXB and the third pixel PXC. Therefore, onlythe second output light OL2 reflected and outputted from the surface ofthe third data line 171 c among the reflected light passes through thesecond overlapping portion O2 of the second color filter 230B and thethird color filter 230C. Compared to FIG. 11, the third overlappingportion O3 overlaps two data lines, the first data line 171 a and thesecond data line 171 b, but the second overlapping portion O2 havinghigher light transmittance than that of the third overlapping portion O3overlaps one data line, the third data line 171 c, thus the totaltransmittance of light reflected on the surfaces of the signal lines 131a, 131 b, 131 c, 131 d, 131 e, 171 a, 171 b, and 171 c may be reduced.

As described above, according to the display device according to theembodiment, when the color filters are overlapped, the third overlappingportion O3 of the third color filter 230C and the first color filter230A having the relatively smallest light transmittance overlaps twodata lines, the first data line 171 a and the second data line 171 b;when the color filters are overlapped, the first overlapping portion O1of the first color filter 230A and the second color filter 230B havingthe relatively largest light transmittance overlaps one voltage line,the third voltage line 131 c; and when the color filters are overlapped,the second overlapping portion O2 of the second color filter 230B andthe third color filter 230C having the middle light transmittanceoverlaps one data line, the third data line 171 c. Accordingly, thefifth output light OL5 and the sixth output light OL6 having therelatively short path of the reflected light pass through the thirdoverlapping portion O3 having the relatively smallest transmittance; thesecond output light OL2 having the relatively short path of thereflected light passes through the second overlapping portion O2 havingthe middle transmittance; and the first output light OL1 having therelatively long path of the reflected light passes through the firstoverlapping portion O1 having the largest light transmittance, thus thetotal transmittance of light reflected on the surfaces of the signallines 131 a, 131 b, 131 c, 131 d, 131 e, 171 a, 171 b, and 171 c may bereduced. In addition, since the first overlapping portion O1 having thelargest light transmittance does not overlap the data line, the lighthaving the relatively short path of the reflected light does not passthrough the first overlapping portion O1. For example, compared to acase in which the first overlapping portion O1, the second overlappingportion O2, and the third overlapping portion O3 overlap the same numberof data lines respectively, in the display device according to theembodiment, the third overlapping portion O3 having the lowest lighttransmittance overlaps two data lines, and the first overlapping portionO1 having the largest transmittance does not overlap the data line, thusthe total transmittance of light reflected on the surfaces of the signallines 131 a, 131 b, 131 c, 131 d, 131 e, 171 a, 171 b, and 171 c may bereduced.

In addition, since one data line and two voltage lines are disposed ineach pixel, when it is compared to a case in which three data lines andsix voltage lines are disposed in three pixel areas, an aperture ratiodecreases because five voltage lines and three data lines are disposedin the three pixel areas.

As described above, according to the embodiment, the overlapping portionof the color filters having the lowest light transmittance overlaps thetwo data lines while reducing the aperture ratio by reducing the numberof signal lines overlapping the color filters, so that it is possible toreduce the total transmittance of the output light of which the lightincident from the outside is reflected and outputted from the surface ofthe signal lines.

Hereinafter, an arrangement of signal lines of a display deviceaccording to another embodiment will be described with reference to FIG.14. FIG. 14 is a layout view for illustrating an arrangement of signallines of a display device according to another embodiment.

Referring to FIG. 14, the arrangement of the signal lines 131 a, 131 b,131 c, 131 d, 131 e, 171 a, 171 b, and 171 c of the display deviceaccording to the embodiment is similar to that of the signal lines 131a, 131 b, 131 c, 131 d, 131 e, 171 a, 171 b, and 171 c of the displaydevice according to the embodiment shown in FIG. 1. However, unlike thedisplay device according to the embodiment shown in FIG. 1, in theembodiment shown in FIG. 14, the third data line 171 c may be disposedbetween the first pixel PXA and the second pixel PXB. According to theembodiment of FIG. 14, the overlapping portion of the first color filter230A and the third color filter 230C having the relatively smallesttransmittance of the overlapping portion of the color filter overlapsthe two data lines, the first data line 171 a and the second data line171 b, thus the total transmittance of the light reflected on thesurfaces of the signal lines 131 a, 131 b, 131 c, 131 d, 131 e, 171 a,171 b, and 171 c may be reduced. All of the features of the displaydevice described above with reference to FIG. 1, FIG. 2, FIG. 3, FIG. 4,FIG. 5, FIG. 6, FIG. 7 and FIG. 8 may be applied to the display deviceaccording to the embodiment shown in FIG. 14.

Hereinafter, an arrangement of signal lines of a display deviceaccording to another embodiment will be described with reference to FIG.15. FIG. 15 is a layout view for illustrating an arrangement of signallines of a display device according to another embodiment.

Referring to FIG. 15, the arrangement of the signal lines 131 a, 131 b,131 c, 131 d, 131 e, 171 a, 171 b, and 171 c of the display deviceaccording to the embodiment is similar to that of the signal lines 131a, 131 b, 131 c, 131 d, 131 e, 171 a, 171 b, and 171 c of the displaydevice according to the embodiment shown in FIG. 1. However, unlike thedisplay device according to the embodiment shown in FIG. 1, in theembodiment shown in FIG. 15, a portion of the third data line 171 c maybe disposed between the first pixel PXA and the second pixel PXB, andthe other portion of the third data line 171 c is disposed between thesecond pixel PXB and the third pixel PXC. As such, by disposing thethird data line 171 c for applying the data voltage to the second pixelPXB at respective sides of the second pixel PXB, a change in capacitanceof a parasitic capacitor, which may occur due to a difference between anoverlapping area of the first pixel PXA and the third data line 171 cand an overlapping area of the third pixel PXC and the third data line171 c, may be reduced, so that it is possible to prevent display qualitydeterioration that may occur due to the change in capacitance of theparasitic capacitor. According to the embodiment of FIG. 15, theoverlapping portion of the first color filter 230A and the third colorfilter 230C having the relatively smallest transmittance of theoverlapping portion of the color filter overlaps the two data lines, thefirst data line 171 a and the second data line 171 b, thus the totaltransmittance of the light reflected on the surfaces of the signal lines131 a, 131 b, 131 c, 131 d, 131 e, 171 a, 171 b, and 171 c may bereduced. All of the features of the display device described above withreference to FIG. 1, FIG. 2, FIG. 3, FIG. 4, FIG. 5, FIG. 6, FIG. 7 andFIG. 8 may be applied to the display device according to the embodimentshown in FIG. 15.

As described above, according to the embodiments, the overlappingportion of the color filters having the lowest light transmittanceoverlaps the two data lines while reducing the aperture ratio byreducing the number of signal lines overlapping the color filters, sothat it is possible to reduce the total transmittance of the outputlight of which the incident light incident from the outside is reflectedand outputted from the surface of the signal lines.

While this present disclosure has been described in connection with whatis presently considered to be practical embodiments, it is to beunderstood that the invention is not limited to the disclosedembodiments, but, on the contrary, is intended to cover variousmodifications and equivalent arrangements included within the spirit andscope of the appended claims.

DESCRIPTION OF SYMBOLS

PXA, PXB, PXC: pixel

O1, O2, O3: overlapping portions of color filters

IL1, IL2, IL3, IL4, ILS, IL6, IL7, IL8: incident lights

OL1, OL2, OL3, OL4, OL5, OL6, OL7, OL8: output lights

131, 131 a, 131 b, 131 c, 131 d, 131 e: voltage lines

171, 171 a, 171 b, 171 c: data lines

230A, 230B, 230C: color filters

What is claimed is:
 1. A display device comprising: a plurality ofpixels disposed along a first direction and comprising a first pixelincluding a first color filter, a second pixel including a second colorfilter, and a third pixel including a third color filter; a plurality offirst signal lines and a plurality of data lines extending in a seconddirection substantially perpendicular to the first direction; a firstoverlapping portion in which the first color filter and the second colorfilter overlap each other in an adjacent portion of the first pixel andthe second pixel without overlapping the data lines; a secondoverlapping portion in which the second color filter and the third colorfilter overlap each other that overlap one data line of the data linesin an adjacent portion of the second pixel and the third pixel; and athird overlapping portion in which the third color filter and the firstcolor filter overlap each other that overlap two data line of the datalines in an adjacent portion of the third pixel and the first pixel. 2.The display device of claim 1, wherein the first overlapping portion,the second overlapping portion, and the third overlapping portion extendin the second direction.
 3. The display device of claim 2, wherein awidth of the third overlapping portion is wider than a width of thesecond overlapping portion, and the width of the second overlappingportion is wider than a width of the first overlapping portion.
 4. Thedisplay device of claim 3, wherein light transmittance of the firstoverlapping portion is greater than light transmittance of the secondoverlapping portion, and the light transmittance of the secondoverlapping portion is greater than light transmittance of the thirdoverlapping portion.
 5. The display device of claim 4, wherein lighttransmittance of the first color filter is smaller than lighttransmittance of the second color filter, and light transmittance of thethird color filter is smaller than light transmittance of the firstcolor filter.
 6. The display device of claim 5, wherein one of theplurality of first signal lines overlaps the first overlapping portion.7. The display device of claim 6, wherein two of the plurality of firstsignal lines are disposed at each side of the two data lines overlappingthe third overlapping portion respectively.
 8. The display device ofclaim 1, wherein two of the plurality of first signal lines are disposedat each side of the one data line overlapping the second overlappingportion respectively.
 9. The display device of claim 1, wherein lighttransmittance of the first overlapping portion is greater than lighttransmittance of the second overlapping portion, and the lighttransmittance of the second overlapping portion is greater than lighttransmittance of the third overlapping portion.
 10. The display deviceof claim 9, wherein light transmittance of the first color filter issmaller than light transmittance of the second color filter, and lighttransmittance of the third color filter is smaller than lighttransmittance of the first color filter.
 11. A display devicecomprising: a plurality of pixels disposed along a first direction andincluding a first pixel, a second pixel, and a third pixel; a firstvoltage line, a second voltage line, a third voltage line, a fourthvoltage line, and a fifth voltage line disposed in order along the firstdirection and extending along a second direction substantiallyperpendicular to the first direction; and a first data line, a seconddata line, and a third data line insulated from the first voltage line,the second voltage line, the third voltage line, the fourth voltageline, and the fifth voltage line disposed in order along the firstdirection, and extending along the second direction, wherein the firstdata line and the second data line are disposed between the firstvoltage line and the second voltage line adjacent to each other, thethird data line is disposed between the fourth voltage line and thefifth voltage line adjacent to each other, and no data line is disposedbetween the first pixel and the second pixel.
 12. The display device ofclaim 11, wherein the second voltage line, the third voltage line, andthe second data line are connected to the first pixel, the third voltageline, the fourth voltage line, and the third data line are connected tothe second pixel, and the fifth voltage line, the first voltage line,and the first data line are connected to the third pixel.
 13. Thedisplay device of claim 12, wherein the first pixel includes a firstcolor filter, the second pixel includes a second color filter, and thethird pixel includes a third color filter, a first insulating film isdisposed between the first voltage line, the second voltage line, thethird voltage line, the fourth voltage line, the fifth voltage line andthe first data line, the second data line, and the third data line, asecond insulating film disposed on the first data line, the second dataline, and the third data line are further included, and the first colorfilter, the second color filter, and the third color filter are disposedon the second insulating film.
 14. A display device comprising: aplurality of pixels disposed along a first direction and including afirst pixel, a second pixel, and a third pixel; a first voltage line, asecond voltage line, a third voltage line, a fourth voltage line, and afifth voltage line disposed in order along the first direction andextending along a second direction substantially perpendicular to thefirst direction; a first data line, a second data line, and a third dataline insulated from the first voltage line, the second voltage line, thethird voltage line, the fourth voltage line, and the fifth voltage linedisposed in order along the first direction, and extending along thesecond direction, wherein the first data line and the second data lineare disposed between the first voltage line and the second voltage lineadjacent to each other, the third data line is disposed between thesecond voltage line and the third voltage line adjacent to each other,and no data line is disposed between the second pixel and the thirdpixel.
 15. The display device of claim 14, wherein the fourth voltageline and the fifth voltage line are disposed between the second pixeland the third pixel, and no data line is disposed between the fourthvoltage line and the fifth voltage line.
 16. The display device of claim14, wherein the second voltage line, the third voltage line, and thesecond data line are connected to the first pixel, the third voltageline, the fourth voltage line, and the third data line are connected tothe second pixel, and the fifth voltage line, the first voltage line,and the first data line are connected to the third pixel.
 17. Thedisplay device of claim 16, wherein the first pixel includes a firstcolor filter, the second pixel includes a second color filter, and thethird pixel includes a third color filter, a first insulating film isdisposed between the first voltage line, the second voltage line, thethird voltage line, the fourth voltage line, the fifth voltage line andthe first data line, the second data line, and the third data line, asecond insulating film disposed on the first data line, the second dataline, and the third data line are further included, and the first colorfilter, the second color filter, and the third color filter are disposedon the second insulating film.
 18. A display device comprising: aplurality of pixels disposed along a first direction and including afirst pixel, a second pixel, and a third pixel; a first voltage line, asecond voltage line, a third voltage line, a fourth voltage line, and afifth voltage line disposed in order along the first direction andextending along a second direction substantially perpendicular to thefirst direction; a first data line, a second data line, and a third dataline insulated from the first voltage line, the second voltage line, thethird voltage line, the fourth voltage line, and the fifth voltage linedisposed in order along the first direction, and extending along thesecond direction, wherein the first data line and the second data lineare disposed between the first voltage line and the second voltage line,a portion of the third data line is disposed between the second voltageline and the third voltage line, and another portion of the third dataline is disposed between the fourth voltage line and the fifth voltageline, and the portion of the third data line and the another portion ofthe third data line is connected to each other.
 19. The display deviceof claim 18, wherein the second voltage line, the third voltage line,and the second data line are connected to the first pixel, the thirdvoltage line, the fourth voltage line, and the third data line areconnected to the second pixel, and the fifth voltage line, the firstvoltage line, and the first data line are connected to the third pixel.20. The display device of claim 19, wherein the first pixel includes afirst color filter, the second pixel includes a second color filter, andthe third pixel includes a third color filter, a first insulating filmdisposed between the first voltage line, the second voltage line, thethird voltage line, the fourth voltage line, the fifth voltage line andthe first data line, the second data line, and the third data line, asecond insulating film disposed on the first data line, the second dataline, and the third data line are further included, and the first colorfilter, the second color filter, and the third color filter are disposedon the second insulating film.